Lexus GS450h Owner's Manual page 272

272
4-5. Using the driving support systems
WARNING
Pre-crash braking
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When the pre-crash braking function is operating, a large amount of braking force
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will be applied.
If the vehicle is stopped by the operation of the pre-crash braking function, the pre-
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crash braking function operation will be canceled after approximately 2 seconds.
Depress the brake pedal as necessary.
The pre-crash braking function may not operate if certain operations are performed
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by the driver. If the accelerator pedal is being depressed strongly or the steering
wheel is being turned, the system may determine that the driver is taking evasive
action and possibly prevent the pre-crash braking function from operating.
In some situations, while the pre-crash braking function is operating, operation of the
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function may be canceled if the accelerator pedal is depressed strongly or the steer-
ing wheel is turned and the system determines that the driver is taking evasive action.
If the brake pedal is being depressed, the system may determine that the driver is tak-
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ing evasive action and possibly delay the operation timing of the pre-crash braking
function.
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: Depending on the region in which the vehicle was sold, the pre-crash braking func-
tion may not be available.
When to disable the pre-crash safety system
■
In the following situations, disable the system, as it may not operate properly, possibly
leading to an accident resulting in death or serious injury:
When the vehicle is being towed
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When your vehicle is towing another vehicle
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When transporting the vehicle via truck, boat, train or similar means of transportation
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When the vehicle is raised on a lift with the hybrid system on and the tires are allowed
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to rotate freely
When inspecting the vehicle using a drum tester such as a chassis dynamometer or
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speedometer tester, or when using an on vehicle wheel balancer
When a strong impact is applied to the front bumper or front grille, due to an accident
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or other reasons
If the vehicle cannot be driven in a stable manner, such as when the vehicle has been
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in an accident or is malfunctioning
When the vehicle is driven in a sporty manner or off-road
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When the tires are not properly inflated
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When the tires are very worn
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When tires of a size other than specified are installed
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When tire chains are installed
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When a compact spare tire or an emergency tire puncture repair kit is used
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If equipment (snow plow, etc.) that may obstruct the radar sensor or camera sensor is
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temporarily installed to the vehicle
GS450h_300h_OM_OM30F92E_(EE)
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